| 钒钛铁精矿钛白废酸浸出提钒实验 |
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| 引用本文： | 吴恩辉,李军,侯静,徐众,黄平,刘黔蜀,吕松.钒钛铁精矿钛白废酸浸出提钒实验[J].矿产综合利用,2022,43(5):20-24. |
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| 作者姓名： | 吴恩辉 李军 侯静 徐众 黄平 刘黔蜀 吕松 |
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| 作者单位： | 攀枝花学院，四川 攀枝花 617000 |
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| 基金项目： | 国家级大学生创新创业训练计划项目（201811360001）；国家自然科学基金项目（U1960101）；四川省科技厅项目（2020YFH0195）；四川省科技计划项目（2019ZYD026） |
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| 摘 要： | 为了提高钒钛铁精矿中V2O5的综合利用率，采用正交实验法，对其进行了钛白废酸直接浸出和焙烧-浸出实验。直接浸出实验结果表明，对V2O5浸出率影响最大的因素是液固比，影响最小的是废酸浓度；在浸出温度为90℃，浸出时间90 min，液固比为5和废酸浓度为20%时，钒钛铁精矿中V2O5的浸出率较高，其值为71.05%。焙烧-浸出实验结果表明，对钒浸出率影响程度由大到小分别是焙烧温度、碳酸钾配比、碳酸钠配比和焙烧时间；在焙烧温度为1000℃，焙烧时间1 h，碳酸钠配比为5%和碳酸钾配比为10%时，V2O5的浸出率可达84.48%。
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| 关 键 词： | 钒钛铁精矿 钛白废酸 浸出 正交实验 |
| 收稿时间： | 2020-09-21 |
Extraction of Vanadium from Vanadium Titanomagnetite Concentrates by Leaching Process with Titanium White Waste Acid |
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| Affiliation: | Panzhihua University, Panzhihua, Sichuan, China |
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| Abstract: | In order to improve the comprehensive utilization rate of V2O5 form vanadium titanomagnetite concentrates, the direct leaching and the roasting-leaching tests were carried out using titanium white waste acid byorthogonal experiment method. The results of direct leaching experiment show that the liquid-solid ratio is the most important factor affecting the leaching rate of V2O5, and the concentration of titanium white waste acid is the least. The 71.05% vanadium can be leached under the experimental condition of 20% of titanium white waste acid, 90℃ for 90 min with a liquid-to-solid ratio of 5. The results of roasting-leaching experiment show that the effects of roasting temperature, K2CO3 ratio, Na2CO3 ratio and roasting time on the leaching rate of V2O5 are from large to small. When the conditions of roasting time of 2 h, roasting temperature of 1000℃, Na2CO3 ratio of 10%, and K2CO3 ratio of 10%, and the leaching rate of V2O5 can reach 84.48%. |
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